STRUCTURE AND QUANTUM-SIZE EFFECTS ON THE CHARGING ENERGY OF ALL-METAL ARTIFICIAL ATOMS

Xiaoshuang Chen, Jijun Zhao and Guanghou Wang
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Xiaoshuang Chen: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;
Jijun Zhao: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;
Guanghou Wang: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 37-40

Abstract: The charging and quantum-size effects of all-metal artificial atoms (a tunnel barrier containing a metal particle) are studied by using a Hubbard tight-binding Hamiltonian in the unrestricted Hartree-Fock approximation, which includes intra-atomic and interatomic Coulomb interactions. The charging energy as a function of the electron number added to the artificial atom can be modulated by the artificial atoms is predicted. Furthermore, different charge distributions for the nonequivalent atoms effects of quantum size and structure in the cluster and thus the conductance resonances in all-metal in the artificial atoms are found, which have obvious influence on the electronic transport through all-metal artificial atoms.

Date: 1996
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DOI: 10.1142/S0218625X96000097

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